WO2016167472A1 - 절삭 인서트 - Google Patents

절삭 인서트 Download PDF

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Publication number
WO2016167472A1
WO2016167472A1 PCT/KR2016/002128 KR2016002128W WO2016167472A1 WO 2016167472 A1 WO2016167472 A1 WO 2016167472A1 KR 2016002128 W KR2016002128 W KR 2016002128W WO 2016167472 A1 WO2016167472 A1 WO 2016167472A1
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WO
WIPO (PCT)
Prior art keywords
viewed
edge
central
corner
cutout
Prior art date
Application number
PCT/KR2016/002128
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
최영남
이상용
안선용
Original Assignee
한국야금 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국야금 주식회사 filed Critical 한국야금 주식회사
Priority to US15/566,546 priority Critical patent/US10259055B2/en
Priority to CN201680022136.XA priority patent/CN107530793B/zh
Publication of WO2016167472A1 publication Critical patent/WO2016167472A1/ko

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B23C5/1081—Shank-type cutters, i.e. with an integral shaft with permanently fixed cutting inserts 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/202—Plate-like cutting inserts with special form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
    • B23C5/2226—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/04—Overall shape
    • B23C2200/0494—Rectangular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/12—Side or flank surfaces
    • B23C2200/125—Side or flank surfaces discontinuous

Definitions

  • the present invention relates to a cutting insert.
  • the cutting insert is fastened to a cutting tool mounted on a machine tool and used to cut a workpiece composed of ferrous, nonferrous metals, nonmetal materials, and the like.
  • Such cutting inserts typically have an upper surface, a lower surface, and a plurality of side surfaces connecting the upper surface and the lower surface.
  • An upper pickle is provided between the side and the upper surface, and a lower pickle is provided between the side and the lower surface.
  • the double-sided cutting insert 10 disclosed in Korean Patent No. 10-0949660 in the prior art is a double-sided cutting insert 10 for use in a milling cutter, as shown in FIG.
  • An outer circumferential surface 14 comprising a surface 12, two opposing identical major side surfaces 18 extending therebetween and two opposing identical minor side surfaces 16, and respective end surfaces 12.
  • And four spaced apart major cutting edges 34 formed respectively at the intersection of each major side surface 18 and at each intersection of each end surface 12 and each minor side surface 16.
  • the major side surface 18 is generally flat and the major cutting edge 34 is straight. And inclined with respect to the major side surface 18 by the relief surface 50, and the minor cutting edge 36 has a straight line shape and is perpendicular to the major side surface, as viewed from the end surface as a whole. 10 has a rectangular shape.
  • the major cutting edge 34 has a straight shape and is inclined with respect to the center line M, The major side surface 18 as a whole has a parallelogram shape.
  • the conventional double-sided cutting insert 10 is viewed from the minor side surface 16, as shown in FIG.
  • the minor cutting edge 36 has a straight shape and is inclined with respect to the center line M. As shown in FIG. .
  • the inner end surface 46 has a shape closer to the through bore 22 than the major cutting edge 34 and minor cutting edge 36. That is, the major cutting edge 34 is positioned higher than the inner end surface 46 serving as the engagement surface.
  • the double-sided cutting insert 10 viewed from the end surface as a whole has a rectangular shape, there is a problem that the cutting load is increased in full infeed when cutting the workpiece, there is a problem that the angle is lowered.
  • the major cutting edge 34 when viewed from the major side surface 18, the major cutting edge 34 has a straight line shape and is inclined with respect to the center line M, so that the major side surface 18 has a parallelogram shape as a whole. There is a limit to increase the angle, there is a structural difficulty in improving the machinability.
  • the technical problem of this invention is providing the cutting insert which can reduce cutting load and can improve the squareness.
  • Another technical problem of this invention is to provide the cutting insert which can enlarge a helix angle so that cutting property may be improved.
  • Another technical problem of this invention is to provide the cutting insert which can improve the edge strength of a rising corner side.
  • the cutting insert according to an embodiment of the present invention has four corners facing in opposite directions to each other but has two rising corners at one diagonal position and a height higher than the rising corner at the remaining diagonal positions.
  • First and second end faces having two lower falling corners;
  • First and second major side surfaces lying between the first and second end faces and facing each other and having through holes connecting them to each other;
  • first and second sublateral surfaces lying between the first and second end surfaces and between the first and second major side surfaces and facing in opposite directions, and viewed from the first or second end surface.
  • each of the first and second major side surfaces comprises: a central main lubrication surface lying at the central portion thereof; A first edge main lubrication surface disposed between the central main lubrication surface and the rising corner and oblique to the central main lubrication surface such that the central main lubrication surface protrudes; And a second edge main lubrication surface disposed between the central main lubrication surface and the falling corner and oblique to the central main lubrication surface such that the central main lubrication surface protrudes.
  • each of the first and second sub-sides may include: a first imparting oil surface disposed between the central portion and the rising corner; And a second grant surface disposed between the center portion and the falling corner and having a symmetrical shape with the first grant surface relative to the center and forming an obtuse angle with the first grant surface.
  • the cutting insert further comprises four main lines formed at intersections between the first and second end faces and the first and second main side faces, respectively, in the first or second end faces.
  • each of the four main ships is a central column which lies at its center; A first edge cutout lying between the center cutout and the rising corner and angled with respect to the center cutout so that the center cutout protrudes; And a second edge cutout placed between the center cutout and the falling corner and angled with respect to the center cutout so that the center cutout projects.
  • each of the central periphery, the first edge periphery, and the second edge periphery has a straight or convex shape.
  • the cutting insert further comprises four non-magnetic lines respectively formed at intersections between the first and second end faces and the first and second sub-lateral faces, and at the first or second end faces.
  • each of the four gynecological portions is a first subsection that lies between its center and the rising corner; And a second sub-indentation disposed between the central part and the falling corner and having a symmetrical shape with the first sub-indentation with respect to the center and forming an obtuse angle with the first sub-indentation.
  • each of the first and second sub-sections has a straight or convex shape.
  • the first edge major, the central major, and the second edge major are sequentially in the direction from the respective rising corner toward the respective falling corner.
  • the first edge cutout has a curved form descending subsequent to the rising corner and is convex or concave outward
  • the central cutout has a curved form descending subsequent to the first edge cutout and convex outwardly.
  • the second edge cutout connects the central cutout with the falling corner and has a straight shape.
  • each central portion of the first and second end faces has a flat fastening surface lower than the respective rising corners, and when viewed from the first or second main side surface, the second edge major cut is the fastening surface. Placed in parallel.
  • the second edge main cut is formed at the same height as the fastening surface.
  • each of the four gynecological portion when viewed from the first or second sub-lateral side, each of the four gynecological portion, the downward curved portion from the rising corner toward the falling corner; And a straight portion connected to the falling corner subsequent to the downward curved portion.
  • each central portion of the first and second end faces has a flat fastening surface lower than the respective rising corners, and when viewed from the first or second sub-lateral surface, the straight portion is parallel to the fastening surface.
  • the straight portion when viewed from the first or second sub-lateral surface, is formed at the same height as the fastening surface.
  • the boundary between the downward curved portion and the straight portion lies at the first or second subcutaneous angle.
  • first and second end surfaces are rotationally symmetrical by 180 degrees with respect to the axis of the through hole.
  • the cutting insert when viewed from the first or second end surface, has a polygonal shape of 10 or more angles.
  • an obtuse angle imparting surface is formed on the first imparting oil surface and extends to the first subcutaneous surface.
  • the obtuse angle applying surface has a shape in which the width gradually decreases in the direction from the rising corner toward the falling corner.
  • the cutting insert according to the embodiment of the present invention may have the following effects.
  • the central main feed surface when viewed from the first or second end face, since the central main feed surface has a technical configuration protruding by the first and second edge main feed surface which forms an obtuse angle, cutting with the workpiece The load can be reduced, thereby improving the squareness of the workpiece.
  • the first edge major which is the central minor, and the second edge major is Are placed sequentially
  • the first edge cutout has a curved shape descending subsequent to the rising corner and is convex outward
  • the central cutout has a curved shape descending subsequent to the first edge cutout and convex outward
  • the second edge cutout connects the central cutout and the falling corner and provides a technical configuration to be placed parallel to the fastening surface in a straight line shape, the helix angle can be increased to improve machinability.
  • FIG. 1 is a perspective view showing a cutting insert according to an embodiment of the present invention.
  • FIG. 2 is a view of the cutting insert of FIG. 1 viewed from the first or second end face.
  • FIG. 3 is a view schematically illustrating the angled parts in the drawing of FIG. 2 conceptually.
  • FIG. 4 is a view of the cutting insert of FIG. 1 viewed from the first or second main side.
  • FIG. 5 is a view schematically illustrating the downward curved shape of the first edge cutout and the center cutout in the drawing of FIG.
  • FIG. 6 is a view of the cutting insert of FIG. 1 as viewed from the first or second side view.
  • FIG. 6 is a view of the cutting insert of FIG. 1 as viewed from the first or second side view.
  • FIG. 7 is a view illustrating a state in which the cutting insert of FIG. 1 is mounted to a tool holder.
  • FIG. 8 is a perspective view of a two-sided cutting insert of the prior art.
  • FIG. 9 is a view of the double-sided cutting insert of FIG. 8 viewed from the minor side surface.
  • FIG. 10 is a view from the opposite end surface of the double-sided cutting insert of FIG. 8.
  • FIG. 11 is a view of the double-sided cutting insert of FIG. 8 as seen from the major side surface.
  • fastening surface 210 first main side surface
  • first edge main oil surface 203 second edge main oil surface
  • FIG. 1 is a perspective view illustrating a cutting insert according to an embodiment of the present invention
  • FIG. 2 is a view of the cutting insert of FIG. 1 viewed from a first or second end surface
  • FIG. 3 is angled in the view of FIG. 2. It is a schematic drawing which conceptualizes so that a part may appear raised.
  • FIG. 4 is a view of the cutting insert of FIG. 1 viewed from the first or second major side
  • FIG. 5 conceptualizes the downward curved shape of the first edge major and central center major in the drawing of FIG. 4. Figure is schematically shown.
  • FIG. 6 is a view of the cutting insert of FIG. 1 viewed from a first side or a second side
  • FIG. 7 is a view illustrating a state in which the cutting insert of FIG. 1 is mounted to a tool holder.
  • Cutting insert (A) according to an embodiment of the present invention, as shown in Figures 1 to 7, the first and second end surfaces 110, 120, and the first and second major side surfaces 210 ) 220, and first and second sublateral surfaces 310, 320.
  • the first and second end faces 110 and 120 face each other in opposite directions, as shown in FIGS. 1 and 2, each having four corners but two raised corners 101 at one diagonal position. ) And two descending corners 102 lower in height than the rising corner 101. Further, the first and second end surfaces 110 and 120 may be rotated by 180 degrees with respect to the axis of the through hole 209 to be described later. In addition, each center of the first and second end surfaces 110 and 120 may have a flat fastening surface 103 that is lower than the rising corner 101 and has the same height as the falling corner 102.
  • each of the first and second end surfaces 110 and 120 may be double-sided, and when one surface is used for cutting, one surface may also be referred to as a "chip brake surface" from which chips are discharged. On the other side, the other surface lying in the opposite direction may be referred to as a "fastening surface” or “mounting surface” fastened to the tool holder 10 (see FIG. 7).
  • the first and second major side surfaces 210 and 220 are placed between the first and second end surfaces 110 and 120, and face in opposite directions, as shown in FIGS. 1 and 4. And through holes 209 connecting them to each other. That is, the through hole 209 penetrates through the cutting insert A of the present application, and one end and the other end thereof may be placed on the first and second main side surfaces 210 and 220, respectively.
  • the first and second subsides 310, 320 are between the first and second end faces 110, 120 and as shown in FIGS. 1 and 6, and the first and second major sides 210. ) 220, and faces in opposite directions to each other.
  • first and second main side surfaces 210 and 220 will be described in detail with reference to FIGS. 1 to 3.
  • each of the first and second major side surfaces 210 and 220 may include a central main oil filling surface 201, a first edge main oil filling surface 202, and a second edge main oil filling surface ( 203).
  • the central main free surface 201 lies at each center of the first and second major side surfaces 210, 220, and the first edge main
  • the oil surface 202 lies between the center main oil surface 201 and the rising corner 101 and forms an obtuse angle with respect to the center main oil surface 201 so that the center main oil surface 201 protrudes
  • the second edge main oil surface ( 203 is positioned between the central main free surface 201 and the falling corner 102 and forms an obtuse angle with respect to the central main free surface 201 so that the central main free surface 201 protrudes.
  • Each of the first and second sub side surfaces 310 and 320 may include a first grant surface 301 and a second grant surface 302, as shown in FIGS. 1 to 3.
  • the first grant surface 301 is formed between each of the centers of the first and second subsides 310 and 320 and the rising corner 101.
  • the second grant surface 302 is disposed between each of the central portion and the falling corner 102, and has a shape symmetrical with the first grant surface 301 relative to the central portion, the first grant surface The obtuse angle with 301 can be achieved.
  • the technical configuration in which the first and second grant surface 301, 302 are oblique angles to each other, and each of the side surfaces 310 and 320 protrude Since the cutting load with the workpiece can be reduced, the squareness of the workpiece can be improved. In particular, since the side surfaces 310 and 320 each have a technical configuration in which they protrude, the surface roughness of the workpiece can be improved during cutting.
  • each of the first and second sublateral surfaces 310 and 320 may form a central portion thereof so that the central portion protrudes.
  • the central grant surface (see 303 of FIG. 6) which forms an obtuse angle with respect to each of the second grant surfaces 301 and 302 may be further included.
  • the host ship 400 is formed at an intersection between the first and second end surfaces 110 and 120 and the first and second main side surfaces 210 and 220, respectively.
  • a total of four can be formed.
  • each of the four main lines 400 includes a central cutout 401, a first edge cutout 402, and a second edge cutout 403, as shown in FIGS. 2 and 3. can do.
  • the central cutout 401 may be placed at the center of each main portion 400, and the first edge cutout 402 is the center cutout.
  • An obtuse angle may be formed with respect to the center cutout 401 such that the center cutoff 401 is disposed between the insulator 401 and the falling corner 102 and the center cutout 401 protrudes.
  • the technical configuration protrudes by the center and main cutouts 401 by the first and second edge cutouts 402 and 403 which form an obtuse angle. Since the sidewalls and the clearance of the workpiece are formed by the first and second edge cutouts 402 and 403 which are relatively placed, the cutting load with the workpiece can be reduced even during full cutting. Therefore, the squareness of the workpiece can be improved.
  • each of the central cutout 401, the first edge cutout 402, and the second edge cutout 403 are each straight or convex. It may have a form.
  • the female line 500 is formed at an intersection between the first and second end surfaces 110 and 120 and the first and second sublateral surfaces 310 and 320, respectively, as shown in FIG. 1.
  • a total of four can be formed.
  • each of the four gynecokinetic parts 500 may include a first subcutaneous 501 and a second subcutaneous 502, as shown in FIGS. 2 and 3.
  • the first subcutaneous 501 when viewed from the first or second end face 110 or 120, the first subcutaneous 501 can be placed between the center of each female line 500 and the rising corner 101, and the second subcutaneous.
  • the phosphorus 502 may be disposed between the center portion and the falling corner 102, and may have a symmetrical shape with the first indentation 501 based on the center and may form an obtuse angle with the first indentation 501.
  • the technical configuration in which the first and second subcutaneous portions 501 and 502 form an obtuse angle with each other, and the respective glands portion 500 protrudes Since the cutting load with the workpiece can be reduced, the squareness of the workpiece can be improved.
  • the female part 500 since the female part 500 has a technical configuration in which each protrudes, it is possible to improve the surface roughness of the workpiece during cutting.
  • each of the first and second subcutaneous 501, 502 may have a straight or convex shape.
  • each of the four gynecological lines 500 forms a central portion thereof and is the first and second subcutaneous portions 501 and 502 such that the central portion protrudes.
  • the central subdentation 503 may have a straight or convex shape.
  • first edge cutout 402 the central cutout 401
  • second edge cutout 403 will be described in more detail with reference to FIGS. 1, 4, and 5.
  • the first edge cutout 402, the central cutout 401, and the second edge cutout are 403 may be sequentially placed in a direction from each rising corner 101 toward each falling corner 102.
  • the first edge cutout 402 has a curved shape that descends subsequent to the rising corner 101 and may be convex or concave outward
  • the central cutout 401 is connected to the first edge cutout 402. It may have a downward curved shape and may be convex or concave outward
  • the second edge cutout 403 connects the central cutout 401 and the falling corner 102 and may have a straight shape, for example. .
  • the first edge major cutout 402 has a curved shape descending successively to the rising corner 101 and is convex or concave outward
  • the central cutout Phosphor 401 has a curved shape descending successively following first edge cutout 402 and convex or concave outward
  • second edge cutout 403 is center cutout 401 and falling corner 102. It provides a technical configuration that has a straight line shape, and the helix angle is increased to improve cutting.
  • the second edge major cuts 403 may be formed in parallel with the fastening surface 103. Therefore, by designing the second edge major cutting 403 to the same height as the fastening surface 103, it is possible to implement a larger helix angle than the prior art.
  • an obtuse angle applying surface 601 may be applied to the first subcutaneous part 501. Specifically, as shown in FIG. 6, the obtuse angle applying surface 601 is extended to the first subcutaneous portion 501 and is formed at an obtuse angle on the first granting oil surface 301, but the falling corner 102 at the rising corner 101. It may have a shape that the width becomes smaller gradually toward the direction toward).
  • each of the four non-linear portions 500 is a downward curve from the rising corner 101 toward the falling corner 102.
  • the portion 505 and the straight portion 506 connected to the falling corner 102 in succession to the downward curved portion 505 may be illustratively included.
  • Each central portion of the first and second end surfaces 110 and 120 has a flat fastening surface 103 which is lower than the rising corner 101 and has the same height as the falling corner 102, and has a first or second portion.
  • the straight portion 506 may be parallel to the fastening surface 103. More specifically, when viewed from the first or second sub-side 310 or 320, the straight portion 506 may be formed at the same height as the fastening surface 103.
  • the boundary between the downward curved portion 505 and the straight portion 506 may be placed on the first or second sub-section 501, 502. Can be.
  • the two rising corners 101, the two falling corners 102, and the first main side surface Two obtuse portions of 210, two obtuse portions of second major side surface 220, obtuse portions of first side surface 310, and obtuse portions of second side surface 320 provide an approximately angled form.
  • the cutting insert (A) according to the embodiment of the present invention described above may have a substantially ten-corner shape.
  • the cutting insert may have an approximately 12 square shape.
  • the cutting insert (A) may have the following effects.
  • the central main surface 201 when viewed from the first or second end surface 110 or 120, is the first and second edge main surface 202 (203) obtuse angle to this Since it has the technical structure which protrudes by), the cutting load with a workpiece can be reduced, and the squareness of a workpiece can be improved by this.
  • the first edge column In addition, according to one embodiment of the present invention, when viewed from the first or second major side surface (210 or 220), in each of the rising corner 101 toward the respective falling corner 102, the first edge column The phosphorus 402, the central cutout 401, and the second edge cutout 403 are sequentially placed, and the first edge cutout 402 has a curved shape descending subsequent to the rising corner 101. Convex outwardly or outwardly when viewed from the first or second end face, the central cutoff 401 has a curved form descending subsequent to the first edge cutout 402 and is straight when viewed from the first or second end face.
  • the second edge cutout 403 connects the central cutout 401 and the falling corner 102 and exemplarily lies parallel to the fastening surface 103 in a straight line. Therefore, the helix angle can be increased to improve the machinability.
  • the edge strength of the rising corner 101 side can be improved.
  • the present invention relates to a cutting insert, it can be applied to cutting a workpiece, and thus there is industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Milling Processes (AREA)
  • Drilling Tools (AREA)
PCT/KR2016/002128 2015-04-17 2016-03-03 절삭 인서트 WO2016167472A1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US15/566,546 US10259055B2 (en) 2015-04-17 2016-03-03 Cutting insert
CN201680022136.XA CN107530793B (zh) 2015-04-17 2016-03-03 切削刀具

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150054529A KR101669560B1 (ko) 2015-04-17 2015-04-17 절삭 인서트
KR10-2015-0054529 2015-04-17

Publications (1)

Publication Number Publication Date
WO2016167472A1 true WO2016167472A1 (ko) 2016-10-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/002128 WO2016167472A1 (ko) 2015-04-17 2016-03-03 절삭 인서트

Country Status (4)

Country Link
US (1) US10259055B2 (zh)
KR (1) KR101669560B1 (zh)
CN (1) CN107530793B (zh)
WO (1) WO2016167472A1 (zh)

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US20220250175A1 (en) * 2021-02-10 2022-08-11 Tungaloy Corporation Cutting insert and cutting tool including same

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KR20070090877A (ko) * 2004-09-02 2007-09-06 잉거졸 컷팅 툴 캄파니 접선 절단 삽입체 및 밀링 절단기
KR20100093236A (ko) * 2009-02-16 2010-08-25 한국야금 주식회사 양면형 절삭 인서트를 적용한 밀링 절삭공구
KR101308186B1 (ko) * 2011-10-07 2013-09-12 대구텍 유한회사 접선방향 절삭 인서트 및 이를 장착한 밀링 커터
KR101380884B1 (ko) * 2012-06-14 2014-04-02 한국야금 주식회사 양면형 절삭 인서트

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220250175A1 (en) * 2021-02-10 2022-08-11 Tungaloy Corporation Cutting insert and cutting tool including same
US11780019B2 (en) * 2021-02-10 2023-10-10 Tungaloy Corporation Cutting insert and cutting tool including same

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US20180085836A1 (en) 2018-03-29
CN107530793A (zh) 2018-01-02
US10259055B2 (en) 2019-04-16
CN107530793B (zh) 2019-05-14

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